Three-dimensional structure of fast ion conducting 0.5Li2S+0.5[(1−x)GeS2+xGeO2] glasses from high-energy X-ray diffraction and reverse Monte Carlo simulations

Effect of VO43−Substitution for PO43−on Electrical Conductivity in the Nasicon Li3Sc2(PO4)3Compound

“…having oxygen at bridging positions in mixed Ge-(S/O) 4 tetrahedra and sulfur at both bridging and non-bridging positions due to the replacement of sulfur by oxygen. Petkov et al [35], however, argues that the formation of the abovementioned mixed Ge-(S/O) 4 tetrahedra during substitution of GeO 2 for GeS 2 is very complicated. Based on the three-dimensional atomic-scale structure of the glasses, Petkov et al proposed that independent chains of (Li +À S) 2 GeS 2/2 and (Li +À O) 2 GeO 2/2 tetrahedra exist as repeated units in the substituted glasses, concomitant with the distortion in the Ge-S 4 tetrahedra.…”

Ceramic and polymeric solid electrolytes for lithium-ion batteries

“…Like Li 2 S-P 2 S 5 , Li 2 S-GeS 2 -P 2 S 5 has been used in batteries with sulfide cathodes, such as Mo 6 S 8 , which operates at 2-3 V vs. Li/Li + [32]. The addition of oxygen to Li 2 S-GeS 2 increases the room temperature conductivity [33]. The increase is attributed to an increase in the coordination number of lithium, but larger amounts of oxygen lead to a decrease in free volume, which results in a decrease in conductivity.…”

A Review of High-Energy X-Ray Diffraction from Glasses and Liquids

“…Modern technological applications include mouldable intra-red optics and fibers, lenses, memory devices, and phase change materials. High energy X-ray diffraction studies have been carried out on selenides [85][86][87][88][89][90][91], for example, see Figure 4, sulfides [92][93][94][95][96][97][98], arsenides [96][97][98], tellurites [99][100][101][102][103][104], and chalcohalides [105][106][107]. Bychkov et al found a complex variation in network formation and destruction versus composition in binary chalcogenides [85].…”

“…Bychkov et al found a complex variation in network formation and destruction versus composition in binary chalcogenides [85]. Chemical ordering effects [98] and conduction pathways in fast-ion conducting chalcogenide glasses have also been an area of significant interest relating structure to changes in ion transport [87,88,94,95,[105][106][107].…”